Gear Generator - Parametric Gears & Racks

Looking for Gears? Look no further.

This OpenSCAD script lets you generate a wide variety of gears - spur, ring, crown, bevel, worm gears, and gear racks - all fully parametric and customizable. Built using the power of BOSL2, it uses real-world gear parameters like circular pitch, pressure angle, and helical angles to create functional, realistic gears. Whether you're designing for mechanical systems, learning about gear mechanics, or simply experimenting, this script has you covered.

Click on Customize to open the generator.

🚀 Quick Start

- Select a Gear Type Choose a gear type. Adjust general parameters like circular pitch and teeth count, which are shared across all types.

- Customize Your Gear Each gear type has its own unique parameters. Expand the relevant section (e.g., spur, bevel) and adjust those to your needs.

- Render and Export Generate your gear at the desired resolution, then export it for slicing and 3D printing.

⭐ Features

- Multiple Gear Types Generate spur, ring, crown, bevel, worm gears, and gear racks with ease.

- Customizable Parameters Adjust circular pitch, teeth count, pressure angle, helical angles, clearance and more.

- Precision Modeling Adheres to standard gear design principles for functional prototypes and gear ratio experiments.

- Realistic Results Create not just visual representations but fully functional designs that meet engineering standards.

This script is open source under a Creative Commons Attribution license - free to use, modify, and share with proper credit. Credits go to the BOSL2 library and team. Refer to gears.scad for full documentation. If you have GitHub, go show them some love with a star!

🛠️ Changelog v1.1 - Added Gear Racks – Supports both straight and helical gear racks.

- Improved Parameter Controls – Enhanced parameters for finer control over gear properties.

v1.2 - Fixed an issue with worm gears in the MakerWorld Customizer where top faces would connect.

v1.3 - Added the ability to specify the cutter radius for bevel gears.

- Added support for straight bevel gears (set cutter radius and spiral to 0).

v1.4 - Added a worm type that mates with a worm gear.

- Added support for defining gear size by module or circular pitch.

v1.5 (latest) - Added customizable spur gear bores (round, D, keyway, and spline).

- Added optional hubs with configurable set screw holes.

- Added support for left- and right-handed helical gears using positive or negative helix angles.

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